US3857556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle suspensions
Assignee: Dunlop Ltd
•
Filing: 1973-02-21
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Granted: 1974-12-31
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Expires: 1993-02-21
Abstract
Abstract A vehicle suspension comprising an elastomeric material spring for attachment between the vehicle and a wheel bearing housing and a means for limiting heat transfer between the housing and the spring. The means maybe a low conductivity member either separate or integral with the end plate of the spring, of which the following is a specification.
Inventors
- 👤 B Wing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:39
CPC Classifications
F; F16; F16F; F16F1/00; F16F1/36; F16F1/40; F16F1/403; B; B60; B60G; B60G11/00; B60G11/22
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
69 words
A vehicle suspension comprising a spring of elastomeric material having means at one end for attachment to a vehicle, an end plate at the other end connected to a vehicle wheel bearing, means for limiting the rate of heat transfer between the bearing and the elastomeric material comprising a series of projections betWeen the end plate and the bearing to form a space for the air to pass therethrough.
Claim 2
Dependent Claim
69 words
A vehicle suspension comprising a spring of elastomeric material having means at one end for attachment to a vehicle, an end plate at the other end connected to a vehicle wheel bearing, means for limiting the rate of heat transfer between the bearing and the elastomeric material comprising a series of projections betWeen the end plate and the bearing to form a space for the air to pass therethrough.
Claim 3
Dependent Claim
31 words
The vehicle suspension of claim 1 in which the projections are independent and not interconnected with each other to define a plurality of air passages between the plate and the bearing.
Claim 4
Dependent Claim
20 words
A vehicle suspension according to claim 1 wherein the end plate is bonded to the elastomeric material of the spring.
Claim 5
Dependent Claim
19 words
A vehicle suspension according to claim 1 wherein the projections are formed in the end plate of the spring.
Claim 6
Dependent Claim
14 words
A vehicle suspension according to claim 1 wherein the end plate includes heat-dissipating means.
Claim 7
Dependent Claim
14 words
A vehicle suspension according to claim 5 wherein the heat-dissipating means comprises cooling fins.
Claim 8
Dependent Claim
18 words
A vehicle suspension according to claim 5 wherein the heat-dissipating means comprises cooling apertures in the end plate.
References Cited (Backward Citations)
US2802662A
Cited
US2801714A
Cited
US3519260A
Cited
GB1232539A
Cited
US3684271A
Cited
US3750854A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-30 | 1978-07-01 | 1978-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-30 | 1982-07-01 | 1982-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-30 | 1986-07-01 | 1986-12-31 | $7700.00 | Window Closed / Lapsed |